The 35-year-old The Vampire Diaries actor was joined at the event by Arnold Schwarzenegger and the executive producer of the doc Jerry Weintraub.

“can’t wait to show you what we’ve done. Thank you SHOWTIME for investing in our future by telling these amazing stories. I’m humbled. I’m honored. I’m inspired. Thank you!!!!!!!!!!!! IN THE WORDS OF JAMES CAMERON:’THIS IS THE MOST IMPORTANT STORY OF OUR TIME.NOW IS THE TIME TO TELL IT’” Iantweeted about the Showtime documentary.